Tuesday, 28 June 2016

led - How to ignore pulse in a circuit



I have a 12v cable that sometimes pass (75%on-25%off) and other times 100%on.


What can I put on that cable so if the input is (75%on-25%off) then the output is 0v, and if the input is 100%on the output is 12v?


Is a resistor what I need?


pulse example


enter image description here


Here i want the purple LED only to be on when the brake light is 100%. Right now if is 75% the purple LED is flickering.




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